Description

Bolt Dimensions

The dimensions of a bolt can be expressed in metric or imperial units.

Pitch is the measurement between the apex of adjacent threads on the bolt’s shank.

Diameter is the width of the screw shank. This should not include the bolt head.

Length is the measurement of the bolt from the edge of the chamfer to the undercut of the head. Against this measurement should not include the head.

We Can Customize Your Own Size

Inch Terminology

For inch parts, you might see something like 5/8-11” X 4-1/2”.
In this example, the 5/8 refers to the nominal major diameter of the threads. This is the diameter of the threads as measured at the crests. The 11” refers to the number of complete threads in one inch of the threaded part of the bolt. The 4 ½” refers to the length of the bolt (as measured from under the head, or the widest part of the head).

Metric Terminology

For metric parts, you might see something like M8 X 1.25 X 65MM.
In this example, the M8 means that the major nominal diameter of the threads is eight millimeters. The 1.25 refers to the thread pitch, or the distance from one point on a thread to the same point on the next thread. This means the thread pitch is 1.25 millimeters. The 65MM refers to the length of the part (again, as measured from under the head)

Material Of Bolts

• Aluminum screws are light, resistant to oxidation, thermal and electrical conducive, and easy to manufacture.
• Brass screws are strong, conductive, and corrosion resistant, with low magnetic permeability.
• Copper alloy screws have good load capacity, wear resistance, and are suitable for use near magnets.
• Plastic screws are inexpensive and corrosion resistant for light loads. They are common for applications near water, such as pools.
• Steel screws are produced of strong, carbonated iron. Uncoated steel is vulnerable to corrosion.
• Hardened steel screws are stronger than steel screws, but more brittle. They are made of steel treated by tempering and quenching methods.
• Stainless steel screws are chemical and corrosion resistant with an appealing finish. They cannot be hardened like carbon steel.
• Screws consisting of superalloys exhibit good mechanical strength, surface stability, corrosion resistance, and resistant to creep at high temperatures. Common super alloys include Hastelloy®, Inconel®, Incoloy®, and Monel®.
• Titanium screws are hard and strong, light, and corrosion resistant. When alloyed with other metals, it increases strength and durability.

Raw Materials We Can Provided:Carbon Steel, Stainless Stee304/316,Alloy Steel, Brass,Nonferrous Metals, etc.